Maximum efficiency. Minimum footprint.

At EcoShield Secondary Glazing, our mission is simple: to make Scotland’s unique architectural heritage fit for the 21st century. Based in the heart of Scotland, we understand the challenges of living in beautiful, historic properties—from the draughty sash and case windows of the Kings Park Stirling, Edinburgh’s New Town to the noise-prone tenements of Glasgow’s West End.

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Secondary Glazing Products

What Is Secondary Glazing?

Secondary glazing is an internal glazing system installed on the inside of existing windows, creating an additional insulated layer without altering the original façade. This makes it particularly suitable for retrofit projects, listed buildings, and conservation areas where planning requirements may restrict replacement glazing.

Horizontal Sliding Secondary Glazing

Our horizontal sliding secondary glazing system is a slim, discreet product. Featuring 2–5 smooth-gliding sashes on a durable aluminium track, it provides easy access for ventilation and cleaning.

Vertical Sliding Secondary Glazing

Our vertical sliding secondary glazing is a versatile internal glazing solution, available in three configurations and designed for controlled airflow and ease of use.

Hinged Unit Secondary Glazing

Our hinged secondary glazing system offers a clean, unobtrusive design with slim sightlines and no transoms or mullions, creating clear, uninterrupted glazing. Operated via a single handle with multi-point locking for enhanced security, the system includes a tilt and turn option for easy access and maintenance.

Lift Out Secondary Glazing

Our lift-out secondary glazing system is a simple, removable solution for internal glazing. Each unit features a lift-out glazing panel housed within an external frame that can be fixed to the window face or reveal, allowing panels to be removed when full access is required.

Bespoke, Made to Measure Secondary Glazing

Our bespoke secondary glazing solutions are designed to accommodate complex window shapes, including arched, curved and circular openings, as well as other non-standard geometries. Each system is made to measure, ensuring a precise fit that follows the original window line while maintaining a discreet internal appearance.

Secondary Glazing Performance & Applications

Designed to improve thermal performance, acoustic insulation, and overall energy efficiency, secondary glazing helps reduce heat loss, draughts, and external noise while preserving the building’s original appearance. As a non-invasive and reversible glazing solution, secondary glazing systems can be tailored to suit a wide range of window types and opening configurations, and are widely specified across residential, commercial, education, healthcare, and hospitality projects where performance upgrades are required without structural alteration.

Frequently Asked Questions

What is commercial and trade secondary glazing?

As part of our commercial secondary glazing offering, we work with architects, specifiers and contractors to manage installation projects across the UK. As part of our trade offering, we supply our industry-leading secondary glazing products to installation companies who liaise directly with homeowners.

What are the benefits of commercial and trade secondary glazing?

Both our trade and commercial partners are able to benefit from our entire suite of ultra-sleek secondary glazing products. Whilst we manage the installation process as part of our commercial offering, our product offering doesn’t differ at all. Both are able to enjoy the streamlined aesthetics of our secondary glazing range.

Is commercial and trade secondary glazing suitable for use in listed buildings?

Secondary glazing, whether for our commercial or trade partners, is an ideal choice for listed buildings. Given traditional window replacement often isn’t an option, secondary glazing is the most effective means of bolstering a listed buildings thermal and acoustic performance.

What are the different options available for commercial and trade secondary glazing?

We offer a wide range of product types that are suitable for both commercial and trade applications. This includes vertical sliding, horizontal sliding and hinged secondary glazing.

How much does commercial and trade secondary glazing cost?

The cost of our secondary glazing products, to both our commercial and trade partners, depends on a number of factors including product type, glass spec and sizing’s. To find out more about our pricing for a specific project, contact us noww.

How is commercial and trade secondary glazing installed?

Secondary glazing is significantly easier to install that traditional window replacement and involves considerably less disruption to the window reveal. Visit the Granada Secondary Glazing YouTube channel to view our full suite of installation training videos.